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p Wick.

No. 239,855. Patented April 5, i881.

WITNESSES ATTORNEYS.

UNITED STATES PATENT OF ICE.

CHARLES A. SCHNEIDER, OF NEW YORK, N. Y.

LAMP-WICK.

SPECIFICATION forming part of Iietters Patent No. 239,855, dated April 5,1881.

Application filed February 10, 1881. (No model.) 7

' To all whom it may concern:

Be it known that I, CHARLES A. SCHNEL' DER, of the city, county, and State of New York, have invented a new and Improved Lamp-Wick, of which the following is a speci-V fication.

The object of this invention is to produce a more steady, softer, and uniform flame, and to render the wick less combustible. I

The invention consists in impregnating the wick with certain saline substances which cuock its too rapid combustion, and therefore diminish the amount and retard the formationof carbonaceous crust on the wick, which, when abumlant, causes a diminished and irregular flame. The salts I employ are phosphate of ammonia, biborate of soda, sulphate of ammonia, and chloride of lithium. These salts are dissolvedin water in the proportion, or thereabout, of three ounces of phosphate of ammonia, one ounce of biborate of soda, one ounce of sulphate of.ammonia, and five grains of, chloride of lithium to one pint of water, this amount serving-toimpregnate about two-hundred and fifty wicks.

The iu\ 'ention. furt-her consists in exposing said wick to be dried-that it will shrink as much as it will-afterit has been immersed in and withdrawn from the said solution, and in The-drawing represents a wick so prepared.

The wick may beof cotton or othervegetable fiber, or of wool or hair, or a combination of the same. 1

The solution of salts as herein given retards the combustion ofthe. wick, so that it lasts longer, and the chloride of lithium possesses the further advantage of affecting-the color of the light, so that it is softer and more agreeable to the eye.

Having thus described my invention, l claim as new and desire tosecure by Letters Patent- 1. As an improved article of manufacture, a lamp-wick made, as herein shown and described, with an impregnated compouml consisting of phosphate of ammonia, biborate of soda, sulphate of ammonia, and chloride of lithium, as set forth.

. 2. The method, substantially asherein described, of preparing lamp-wicks, which consists in immersing the wick-in an aqueous solutionof phosphate of ammonia, biborate of,

soda, sulphate of ammonia, and chloride of lithium, in'then withdrawing and drying said wick, and in subjecting it to the pressure of a hot iron, as set forth.

CHARLES A. sonnnionny Witnesses:

I. I STOEER, C. SEDGwIeKI 

